INCH-POUND
A-A-50193B
12 April 2011 SUPERSEDING A-A-50193A
18 July 1997
COMMERCIAL ITEM DESCRIPTION
ETHYLENE ABSORBER/SHELF-LIFE EXTENDER BLANKET, POTASSIUM PERMANGANATE, FOR FRESH FRUITS AND VEGETABLES
The General Services Administration has authorized the use of this commercial item description for all federal agencies.
1. SCOPE. This commercial item description (CID) covers a porous fabric blanket containing ethylene-absorbing material. The blanket is intended to extend the shelf-life of fresh fruits and vegetables when it is used in their storage.
2. SALIENT CHARACTERISTICS
2.1 Absorbing materials. The absorbing material shall be activated alumina (aluminum oxide) coated or impregnated with potassium permanganate (KMnO4) and shall have a maximum moisture content of 16 percent. The absorbing material shall be spherical or pelletized in shape and shall be porous for efficient removal of ethylene from the atmosphere. The absorbing material shall be bright purple in color and free of dust.
2.2 Construction. The blanket shall contain a range of 12 to 15 pounds of absorbing material. The fabric shall be a porous barrier such as non-woven polyester or similar material which allows passage of air, and is dense enough to prevent pellets or excessive particle fines from
escaping to the atmosphere. The blanket shall be constructed to withstand tearing during normal placement in refrigerated walk-in boxes or shipping containers. The blanket shall be rectangular in shape and the surface area shall be in the range of 500 to 1200 square inches (in2) per side. Eyelets to facilitate hanging shall be built into the outer borders of the blanket. Eyelets shall be placed so that the absorbing material will distribute evenly and not be compacted to one end when in a hanging position. A tag shall be affixed to the blanket and shall have the following statement: "AVOID CONTACT WITH WATER".
Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that may improve this document should be sent to: STDZNMGT@dla.mil or Defense
Logistics Agency Aviation VEB, 8000 Jefferson Davis Highway, Richmond, VA 23297-5616. Since contact information can change, you may want to verify the currency of this address information using the ASSIST database at https://assist.daps.dla.mil/.
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